Drain plow



May 29, 1923.

L. RINEHART DRAIN PLOW Filed July 1921 Patented May 29, 1923.,

: unireo sm rts LORON nrnnnaar, or woonBUItN, oaneon.

DRAIN PLOW.

Application filed July 8,

To all whom it may concern: v

vBe it known that I, LORON RINnI-rAR'r, acitizen of the United States, reslding at -VVoodburn, in t'hecounty of Mar and State of Oregon, have invented new and useful Improvements in Drain Plows, of which the following is a specification.

This invention relates to an improved drain plow and has for its principal object to provide an implement which may be drawn by either horse or tractor for producin underground drains in farm lands, to ta e the place of the present known expensive methods of caring for the dramage of lands.

A further object of my invention 18 to so construct the implement that it will produce a perfect drain without cutting up the ground surface of the field or otherwise 1nterfering with the tilling of the land.

A still further object of my invention 15 to provide means for producing a drain beneath the ground surface deep enough to prevent the same from caving in even when stock walk over it and in this connection the drain should be so formed that it will last over a period of-years thus removing the expense in opening up the drains every year or oftener as is now the case.

Another object of this invention is toprovide a device of the character described which is simple in construction, positive in action, economical to manufacture and high ly serviceable.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure l is a view in side elevation of my improved implement,

Fig. 2 is a horizontal section on the hue 22 of Figure 1,

Fig. 3 is a cross section on the line 33 of Fig. 4 of the drill which I use for formin the underground drain, and

Tig. 4 is a longitudinal section on the line 4l of Fig. 2.

In the drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention the numeral 1 designates a draft bar having a clevis connection 2 for towing purposes and with handle bars 3 mounted to the rear of the bar 1 and 1921. Serial No; 483,359;

braced therefrom by the brace rods 4:. Carried upon the rear top side of the bar 1 is atoothed segment 5 which includes a suitable supporting structure 6' having legs which are bolted or otherwisefixed to the bar as best-shown in Fig. 1'. The supporting structure also includes a horizontal-bridge piece 7 which provides a mounting for the pivot 80f the operating lever, 9. This lever has a spring controlled dogging device 1.0 which is actuated by the rod extension 11 having a hand grip 12 which is gripped by the operator when handling the lever so that the lever may be released and swung forward or backward when occasion demands.

Formed preferably as a part of the lever 9 is an extension arm 18, the same being pivoted as at 8 and extending at right angles from the lower end of the lever in a bell crank fashion. Pivoted as at 14 to the end of the arm 13 is a vertical'rod 15 the lower end of which is received in an elongated'slotted opening 16in the top of the drill 17 and pivotally connected within the hollow of the drill by the transverse pin 18. This rod thus acts as a toggle connection between the drill and the control lever 9.

The forward part of the drill is suspended from the knife standard 19 by the pivoted connection afforded by the pin 20 and with the end of the standard entering the hollow of the drill through the opening 21- in the top thereof, as in the case of the rod 15. The opposite end of the standard is hung from the underside of the draft bar by its bifurcated mounting end 22. Both of the pins 18 and 20-are carried by arcuate or semi-circular plates 23 and 24 which are bolted to the inside of the drill in confronting relation so that the attached ends of the rod 15 and standard 19 mav be confined by the pins 18 and 20 or bolts if desired.

The drill as above described is mounted below the draft bar 1 in a substantially horizontal position with the lever 9 adapted to be moved to change the horizontal plane in which it is intended to function by tipping its pointed end 25 up or down so that the depth of the drain under the ground surface may be changed. The pointed end 25 is' preferably solid and threaded to the hollow drill body so that it may be removed for sharpening or renewed by a new point. The bevel of the sides of the point are also made at slightly different angles to the horizontal axis of the drill, as will be seen to more efi'ectively produce the drain and at the same time keep the drill from coming out of the ground.

To relieve resistance to the draft of the implement the standard 19 is arranged with a knife edge 26 along its vertical frontedge.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape,

size and arrangement of parts may be resorted towithout departing from the spirit of'the invention or the scope of the subjoined "claim.

Having thus described my invention, I

claim i In an implement of the class described, a

' drill adapted to be pulled through the ground beneath the surface thereof in substantially a horizontal position, a mounting for the drill having draft connecting means and means for manually changing the horizontal angular position of the drill without withdrawing the same from beneath the ground surface, comprising a standard suspended below the said mounting and having a pivoted connection with the forward part of the drill and a manually controlled lever on the mounting including a vertically actuated rod with one end of the rodpivotally connected to the drill rearwardly of said standard, and the opposite end of the rod connected to said lever by a bell crank, said drill comprising a hollow cylindrical body with a solid pointed nose detachably connected to the body.

In testimony whereof I afiix my signature.

- LORON RINEHART. 

